Heat exchanger tube



FIG. 1 is a front, bottom and right side perspective view of a heat exchanger tube, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is an enlarged vertical cross-sectional view thereof; taken along lines 8-8 of FIG. 2;

FIG. 9 is a front , bottom and right side perspective view of a heat exchanger tube, showing a second embodiment of our new design;

FIG. 10 is a front elevational view thereof;

FIG. 11 is rear elevational view thereof;

FIG. 12 is a left side elevational view thereof;

FIG. 13 is a right side elevational view thereof;

FIG. 14 is a top plan view thereof;

FIG. 15 is a bottom plan view thereof;

FIG. 16 is an enlarged vertical cross-sectional view thereof; taken along lines 16-16 of FIG. 10;

FIG. 17 is a front , bottom and right side perspective view of a heat exchanger tube, showing a third embodiment of our new design;

FIG. 18 is a front elevational view thereof;

FIG. 19 is rear elevational view thereof;

FIG. 20 is a left side elevational view thereof;

FIG. 21 is a right side elevational view thereof;

FIG. 22 is a top plan view thereof;

FIG. 23 is a bottom plan view thereof; and,

FIG. 24 is an enlarged vertical cross-sectional view thereof; taken along lines 24-24 of FIG. 18. 

CLAIM The ornamental design for a heat exchanger tube, as shown and described. 